JSFiddle - React, Tailwind, and code Playground

HTML

<div id="admindiv">
    <div id="replist"></div>
    <div id="repedits"></div>
    <div class="clr"></div>
    <div id="mgrslist"></div>
    <div id="importdiv"></div>
</div>

CSS

#replist {
    background-color:blue;
    float:left;
    height:250px;
    width:300px;
    margin-right:10px;
    margin-bottom:10px;
    padding:3px;
}
#repedits {
    background-color:blue;
    float:left;
    height:250px;
    width:300px;
    margin-bottom:10px;
    padding:3px;
}
#mgrslist {
    background-color:blue;
    height:250px;
    width:300px;
    float:left;
    margin-right:10px;
    padding:3px;
}
#importdiv {
    background-color:blue;
    float:left;
    height:250px;
    width:300px;
    padding:3px;
}
.clr {
    clear:both;
}